The world’s most extensive case of cyber-espionage, including attacks on U.S. government and U.N. computers, was revealed Wednesday by online security firm McAfee, and analysts are speculating that China is behind the attacks.

The spying was dubbed “Operation Shady RAT,” or “remote access tool” by McAfee — and it led to a massive loss of information that poses a huge economic threat, wrote vice president of threat research Dmitri Alperovitch.

. . .

Analysts told The Washington Post that the finger of blame for the infiltration of the 72 networks — 49 of them in the U.S. — points firmly in the direction of China.